Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7e75ce061e2d453…

MALICIOUS

PDF

82.9 KB Created: 2021-09-06 13:51:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 5caf8b5d8329b6f2c43e41584a2799b3 SHA-1: fe0265e922f729be5e411e12fc7fc89ba8370801 SHA-256: f7e75ce061e2d4534128aad9c58e950112d8696494d54762424f5f1d28d6cf20
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a link farm pointing to multiple compromised WordPress upload directories, a common tactic for distributing malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. No scripts were extracted, but the structure suggests exploitation of PDF vulnerabilities or social engineering to lure users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075b0a6d094a---85231700874.pdf In PDF document text
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/2eeb79679090a2ff0f9d7f4dabd57fbb/46629557713.pdfIn PDF document text
    • http://mognational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076ba38e5669---xakubosuguzaduz.pdfIn PDF document text
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16085251a251b0---16027349023.pdfIn PDF document text
    • http://amadpich.com/userfiles/file/71476498785.pdfIn PDF document text
    • https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/1f9466f8ee62f98ab522f5750c7a1ffe/76414697157.pdfIn PDF document text
    • http://guides2alpes.fr/uploads/file/mebololuwoxosi.pdfIn PDF document text
    • http://chinazzjx.com/d/files/56068839723.pdfIn PDF document text
    • http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/468e60107a2c7d43b32980499fa0ae55/17578084224.pdfIn PDF document text
    • http://synowka.pl/galeria/file/zumagelebopubaxafimufofu.pdfIn PDF document text
    • https://computerzone.pk/file/gobaxupoxiviw.pdfIn PDF document text
    • https://petala.gr/userfiles/file/35720018456.pdfIn PDF document text
    • http://patanamachine.com/imgUpload/files/35293382493.pdfIn PDF document text
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608893e215420---xitimawagimumusef.pdfIn PDF document text
    • https://baobihungphu.com/media/ftp/file/12249552849.pdfIn PDF document text
    • https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/5fee3c19ac9f1e4ca04801bfd7f5de14/tijapavovef.pdfIn PDF document text
    • https://fainitelecommunication.com/public/editorfiles/file/gabefinepadunubu.pdfIn PDF document text
    • http://www.tiendadelbordado.com/ckfinder/userfiles/files/rozobinidosirepago.pdfIn PDF document text
    • http://crm333.com/documentos/file/jokesilebinetusuluze.pdfIn PDF document text
    • http://sacoorhealth.pt/site/upload/file/26868380967.pdfIn PDF document text
    • http://moscowprice.com/content/xuploadimages/file/40908691899.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/2d8698b3d23e8019648f02009a6b2ad1/6453094658.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=focal+listen+wireless+manualPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ddb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDB0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f5c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5C7 10556 bytes
SHA-256: 776f5852c3e77e8b8878f3fbd4c8e0208adb42fd8386069222cdb52037574689
font_02_sfnt_off00010de8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DE8 19312 bytes
SHA-256: ba35162c91f7727c3cf56ac4483b2e4cc7662b2789c15b1c187548323152ffbe

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